What does rattlesnake mean?
A rattlesnake is a venomous snake, especially one belonging to the genus Crotalus, whose tail ends in a segmented structure that can produce a distinctive buzzing or rattling sound. The sound is commonly used as a warning, and a snake may vibrate its tail when threatened or preparing to strike. Rattlesnakes are native to the Americas and are especially associated with dry, rocky, or grassy habitats in the United States and Mexico. In ordinary speech, “rattler” is a common informal alternative to “rattlesnake.” The word can also refer to the characteristic sound or rattle associated with these snakes, although the primary meaning is the animal itself. Familiarity with rattlesnakes is important for anyone hiking or working outdoors in areas where they occur, since their venom can cause serious illness, and encounters should be avoided rather than provoked.
nounA venomous snake of the genus Crotalus, distinguished by a hollow, segmented rattle at the end of its tail that produces a buzzing or rattling sound when the snake moves or is disturbed.
- A venomous snake of the genus Crotalus, having a distinctive tail rattle.
"The hikers backed away carefully when a rattlesnake appeared among the rocks."
"The rattlesnake remained concealed beneath the fallen leaves until the dog moved closer."
"Wildlife officials warn hikers about rattlesnakes during the warmer months."
The regular plural is used for multiple individual snakes.
"Several rattlesnakes were observed near the riverbank."
A rattlesnake's warning system is built into its tail: a hollow structure that rattles when the snake moves, often before a person or animal realizes it is nearby.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does rattlesnake come from?
“Rattlesnake” is a compound formed from “rattle” and “snake.” The word “rattle” refers to the sound produced by the snake's tail appendage and also to the appendage itself; the compound was established in English by the early 19th century. The underlying English words have different histories: “snake” is inherited from Old English, while “rattle” developed through Germanic roots associated with making a rapid succession of sharp sounds.
How rattlesnake is actually used
The term is most commonly used in North America. It generally refers to snakes of the genus Crotalus, although related species have sometimes been described more broadly as rattlesnakes.
Easily confused with rattlesnake
A rattle is the sound or vibrating structure at the end of a rattlesnake's tail, whereas a rattlesnake is the entire animal.